android zbar使用

根据zbar目录结构，对Android.mk进行改动，主要改的是文件夹路径和文件路径，修改后的Android.mk的内容如下：

MY_LOCAL_PATH := $(call my-dir) # libiconv include $(CLEAR_VARS) LOCAL_PATH := $(MY_LOCAL_PATH) LOCAL_MODULE := libiconv LOCAL_CFLAGS := \  -Wno-multichar \  -D_ANDROID \  -DLIBDIR="c" \  -DBUILDING_LIBICONV \  -DBUILDING_LIBCHARSET \  -DIN_LIBRARY LOCAL_SRC_FILES := \  libiconv-1.15/lib/iconv.c \  libiconv-1.15/libcharset/lib/localcharset.c \  libiconv-1.15/lib/relocatable.c LOCAL_C_INCLUDES := \  $(LOCAL_PATH)/libiconv-1.15/include \  $(LOCAL_PATH)/libiconv-1.15/libcharset \  $(LOCAL_PATH)/libiconv-1.15/libcharset/include include $(BUILD_SHARED_LIBRARY) LOCAL_LDLIBS := -llog -lcharset # libzbarjni include $(CLEAR_VARS) LOCAL_PATH := $(MY_LOCAL_PATH) LOCAL_MODULE := zbar LOCAL_SRC_FILES := zbarjni.c \  zbar/img_scanner.c \  zbar/decoder.c \  zbar/image.c \  zbar/symbol.c \  zbar/convert.c \  zbar/config.c \  zbar/scanner.c \  zbar/error.c \  zbar/refcnt.c \  zbar/video.c \  zbar/video/null.c \  zbar/decoder/code128.c \  zbar/decoder/code39.c \  zbar/decoder/code93.c \  zbar/decoder/codabar.c \  zbar/decoder/databar.c \  zbar/decoder/ean.c \  zbar/decoder/i25.c \  zbar/decoder/qr_finder.c \  zbar/qrcode/bch15_5.c \  zbar/qrcode/binarize.c \  zbar/qrcode/isaac.c \  zbar/qrcode/qrdec.c \  zbar/qrcode/qrdectxt.c \  zbar/qrcode/rs.c \  zbar/qrcode/util.c LOCAL_C_INCLUDES := \  $(LOCAL_PATH)/include \  $(LOCAL_PATH)/zbar \  $(LOCAL_PATH)/libiconv-1.15/include LOCAL_SHARED_LIBRARIES := libiconv include $(BUILD_SHARED_LIBRARY)

然后在Application.mk中填写你要编译的平台：

APP_ABI := armeabi armeabi-v7a x86 APP_PLATFORM := android-14

在app目录下build.gradle中添加

android { … … sourceSets { main { jni.srcDirs = [] } } repositories { flatDir { dirs 'libs' } } }

将解压后zbar/android/examples/CameraTest/res/layout /下的main.xml文件拷贝到主工程中res/layout下

在MainActivity中调用.so库和native方法：

public class MainActivity extends AppCompatActivity { 
    private Camera mCamera; private CameraPreview mPreview; private Handler autoFocusHandler; TextView scanText; Button scanButton; ImageScanner scanner; private boolean barcodeScanned = false; private boolean previewing = true; static { System.loadLibrary("iconv"); System.loadLibrary("zbar"); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT); /* Instance barcode scanner */ scanner = new ImageScanner(); scanner.setConfig(0, Config.X_DENSITY, 3); scanner.setConfig(0, Config.Y_DENSITY, 3); autoFocusHandler = new Handler(); mCamera = getCameraInstance(); mPreview = new CameraPreview(this, mCamera, previewCb, autoFocusCB); FrameLayout preview = (FrameLayout)findViewById(R.id.cameraPreview); preview.addView(mPreview); scanText = (TextView)findViewById(R.id.scanText); scanButton = (Button)findViewById(R.id.ScanButton); scanButton.setOnClickListener(new OnClickListener() { public void onClick(View v) { if (barcodeScanned) { barcodeScanned = false; scanText.setText("Scanning..."); mCamera.setPreviewCallback(previewCb); mCamera.startPreview(); previewing = true; mCamera.autoFocus(autoFocusCB); } } }); } public void onPause() { super.onPause(); releaseCamera(); } / A safe way to get an instance of the Camera object. */ public static Camera getCameraInstance(){ Camera c = null; try { c = Camera.open(); } catch (Exception e){ } return c; } private void releaseCamera() { if (mCamera != null) { previewing = false; mCamera.setPreviewCallback(null); mCamera.release(); mCamera = null; } } private Runnable doAutoFocus = new Runnable() { public void run() { if (previewing) mCamera.autoFocus(autoFocusCB); } }; PreviewCallback previewCb = new PreviewCallback() { public void onPreviewFrame(byte[] data, Camera camera) { Camera.Parameters parameters = camera.getParameters(); Size size = parameters.getPreviewSize(); Image barcode = new Image(size.width, size.height, "Y800"); barcode.setData(data); String qrCodeString = null; ImageScanner mImageScanner = new ImageScanner(); int result = mImageScanner.scanImage(barcode); if (result != 0) { SymbolSet symSet = mImageScanner.getResults(); for (Symbol sym : symSet) qrCodeString = sym.getData(); } if (!TextUtils.isEmpty(qrCodeString)) { // 成功识别二维码，qrCodeString就是数据。  try { String encodeResust = new String(qrCodeString.getBytes("GB2312"), "utf-8"); Toast.makeText(MainActivity.this, encodeResust, Toast.LENGTH_SHORT).show(); } catch (UnsupportedEncodingException e) { e.printStackTrace(); } } } }; // Mimic continuous auto-focusing AutoFocusCallback autoFocusCB = new AutoFocusCallback() { public void onAutoFocus(boolean success, Camera camera) { autoFocusHandler.postDelayed(doAutoFocus, 1000); } }; }

Demo地址：https://github.com/LeeVanie/ZbarDemo